.zhibiao-legend{
  padding: 0.3rem 0.3rem 0.2rem;
}
.zhibiao-legend .zb-item{
  text-align: center;
  background: #ddd;
  font-size: 0.6rem;
  padding: 0.2rem 0.1rem;
  border-radius: 0.2rem;
  margin: 0 0.1rem;
  border: 1px solid #000;
  cursor: pointer;
  position: relative;
}
.zhibiao-legend .zb-item b{
  position: absolute;
  width: 0.7rem;
  height: 0.7rem;
  left: 50%;
  margin-left: -0.35rem;
  bottom: -0.8rem;
  font-size: 0.5rem;
  line-height: 0.7rem;
  z-index: 99;
  border-radius: 50%;
  border:1px solid #cccccc;
  background-color: #ffffff;
}
.zhibiao-legend .zb-item sub{
  vertical-align: sub;
  font-size: 0.6rem;
}
.zhibiao-legend .zb-item.color-aqi{
  border-color: #FE9A01;
  color: #FE9A01;
}
.zhibiao-legend .zb-item.color-pm25{
  border-color: #00E3D8;
  color: #00E3D8;
}
.zhibiao-legend .zb-item.color-so2{
  border-color: #e4b503;
  color: #e4b503;
}
.zhibiao-legend .zb-item.color-no2{
  border-color: #688ff4;
  color: #688ff4;
}
.zhibiao-legend .zb-item.color-pm10{
  border-color: #23ae39;
  color: #23ae39;
}
.zhibiao-legend .zb-item.color-co{
  border-color: #e16f6e;
  color: #e16f6e;
}
.zhibiao-legend .zb-item.color-o3{
  border-color: #01b3d9;
  color: #01b3d9;
}